Sigma-Aldrich 24937 Purge/Trap H for use with OI Analytical Eclipse 4660, 4560 1 Adet
Marka
Stok Kodu
LB.SA.24937
Kısa Bilgi
Synonym(s): PURGE TRAP H, O.I. ANALYTICAL 4560
| Sigma-Aldrich 24937 Purge/Trap H for use with OI Analytical Eclipse 4660, 4560 1 Adet |
|
Synonym(s): PURGE TRAP H, O.I. ANALYTICAL 4560
SDS için Resmi Tıklayınız... |
|
PROPERTIES
application(s) environmental
Quality Level 100
compatibility for use with OI Analytical Eclipse 4660, 4560
DESCRIPTION
General description
Tubes used in purge and trap analyses generally are packed with multiple beds of adsorbent materials, so that a broad range of polar and nonpolar, high and low molecular weight compounds can be trapped in a single tube. Each bed protects the next, increasingly active bed, by preventing compounds from being held so strongly that they cannot be desorbed quickly without decomposition. During the purge phase of sampling, lower molecular weight compounds pass through the initial adsorbent beds but are trapped by succeeding beds. During desorption, the carrier gas passes through the trap in the reverse direction of purge flow, so that higher molecular weight compounds never come in contact with the stronger (innermost) adsorbents. |
